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Finding the Third Proportional to 989.50 and 2,132

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Solution

The third proportional to 989.50 and 2,132 is: 4,593.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    989.50 : 2,132 = 2,132 : x
  2. Step 2: Convert to fraction form
    989.50/2,132 = 2,132/x
  3. Step 3: Cross multiply
    989.50x = 2,132 × 2,132
  4. Step 4: Simplify right side
    989.50x = 4,545,424
  5. Step 5: Solve for x
    x = 4,545,424/989.50
  6. Step 6: Final answer
    x = 4,593.66

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.